420231023212 has 48 divisors (see below), whose sum is σ = 987395980032. Its totient is φ = 151132034880.

The previous prime is 420231023183. The next prime is 420231023221. The reversal of 420231023212 is 212320132024.

It is a super-2 number, since 2×420231023212² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52472398 + ... + 52480405.

It is an arithmetic number, because the mean of its divisors is an integer number (20570749584).

Almost surely, 2^420231023212 is an apocalyptic number.

It is an amenable number.

420231023212 is an abundant number, since it is smaller than the sum of its proper divisors (567164956820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420231023212 is a wasteful number, since it uses less digits than its factorization.

420231023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104952838 (or 104952836 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 420231023212 its reverse (212320132024), we get a palindrome (632551155236).

The spelling of 420231023212 in words is "four hundred twenty billion, two hundred thirty-one million, twenty-three thousand, two hundred twelve".